申请人:Maurer Stephan
公开号:US20130045513A1
公开(公告)日:2013-02-21
A process for the enzymatic reduction of an enoate (1) wherein the C═C bond of the enoate (1) is stereoselectively hydrogenated in the presence of an enoate-reductase and an oxidizable co-substrate (2) in a system which is free of NAD(P)H,
a.
b. in which
c. A is a ketone radical (—CRO), an aldehyde radical (—CHO), a carboxyl radical (—COOR), with R═H or optionally substituted C
1
-C
6
-alkyl radical,
d. R
1
, R
2
and R
3
are independently of one another H, —O—C
1
-C
6
-alkyl, —O—W with W=a hydroxyl protecting group, C
1
-C
6
-alkyl, which can be substituted, C
2
-C
6
-alkenyl, carboxyl, or an optionally substituted carbo- or heterocyclic, aromatic or nonaromatic radical, or one of R
1
, R
2
and R
3
is a —OH radical, or R
1
is linked to R
3
so as to become part of a 4-8-membered cycle, or R
1
is linked to R so as to become part of a 4-8-membered cycle, with the proviso that R
1
, R
2
and R
3
may not be identical.